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A Black-headed Gull showing both albinism and melanism

01 January 1975 Comments Main paper ...

Reviews

01 September 1962 Comments Reviews Identification for Ringers: 2. T h e Genus Phylloscopus. By Kenneth Williamson. British Trust for Ornithology, Oxford, 1962. 86 pages; 1 colour and 4 monochrome plates. 7s. There are now about a thousand ringers in Britain. Many of these are trained and l...

Notes

01 September 1962 Comments Notes Shelduck moulting in breeding area.--On 9th July 1961, in an area of extensive fresh grazing marshes in north Kent, I noticed an adult male Shelduck (Tadorna tadornd) swimming along the edge of a large fleet. The knob on its bill had regressed, but it was...

Studies of less familiar birds 119. Great Grey Owl

01 September 1962 Comments Main paper mbulosd) by Oscar Moberg were published in British Birds in 1956 (49: plates 1-3), but the remarkable flight pictures by Hilding Mickelsson and Goran Hansson n o w reproduced o n plates 60 and 61 more than justify the species being included in this series...

Radar films of migration over eastern England

01 September 1962 Comments Main paper Research Laboratories of Marconi's Wireless Telegraphy Co. Ltd., at Great Baddow, Chelmsford, Essex, have taken films of a radar display by time-lapse photography and many of these provide a clear record of bird migration; some were shown at the British O...

Behaviour of Pied Flycatchers during an eclipse of the sun

01 September 1962 Comments Main paper during eclipses of the sun, when light intensities may be lower than those which inhibit feeding and other regular activities on normal evenings. This short paper therefore sets out to record some observations which my wife and I made on a pair of Pied Fl...

Report of the bird-ringing committee: progress for 1937

01 April 1938 Comments Main paper the period now under review, on June ist, 1937, the control of the former British Birds Marking Scheme was transferred to the Bird-Ringing Committee appointed for the purpose by the British Trust for Ornithology, under arrangements which have already been...

The index of Heron population, 1937

01 April 1938 Comments Main paper FOR the fourth year in succession* we were able in 1937 to keep accurate record of the fortunes of a large part of the breeding population of Herons {Ardea c. cinerea). It can hardly be said that the results have been dramatic. In England and Wales as a w...

Black Redstart breeding in an Eastern county of England

01 April 1938 Comments Main paper (Plate 13.) IT is only comparatively recently that the breeding of the Black Redstart (Phtznicurus 0. gibraltariensis) in the British Isles has been authentically recorded. During the spring and summer of 1937 a number of observers had the good fortune to...

Letters

01 April 1938 Comments Letters SIRS,--Since a t one or two widely separated localities in t h e Midlands this bird appears t o be on t h e increase, a n d in places is actually re-establishing itself after years of absence, i t h a s been thought desirable t o hold a thorough inquiry i...

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